FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Sep. 30, 2016

FAIR VALUE MEASUREMENTS

Segregation of all assets measured at fair value on a recurring basis

	September 30, 2016			Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)			Significant unobservable inputs (level 3)		Balance Sheet Classification
Money market funds	$	487,184		$	487,184	$	—		$	—	Cash and cash equivalents
Bank-time deposits		57,518			57,518		—			—	Cash and cash equivalents
Corporate bonds		206,519			—		206,519			—	Short-term investments
Bank-time deposits		198,072			198,072		—			—	Short-term investments
Foreign currency forward contracts		16			—		16			—	Prepaid expenses and other
Foreign currency forward contracts		(14	)		—		(14	)		—	Accrued and other current liabilities
Total recurring fair value measurements, net	$	949,295		$	742,774	$	206,521		$	—

	March 31, 2016			Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)			Significant unobservable inputs (level 3)		Balance Sheet Classification
Money market funds	$	562,726		$	562,726	$	—		$	—	Cash and cash equivalents
Corporate bonds		205,250			—		205,250			—	Short-term investments
Bank-time deposits		265,570			265,570		—			—	Short-term investments
Foreign currency forward contracts		(137	)		—		(137	)		—	Accrued and other current liabilities
Total recurring fair value measurements, net	$	1,033,409		$	828,296	$	205,113		$	—